Silent install command line argument doesn't work | Flash Player 10.1

Issue

In Flash Player 10.1, the command line argument for performing a quiet or silent install or uninstall doesn't work.

Solution

With the release of Flash Player 10.1, the command line arguments have changed. You are no longer required to use the -clean/-force argument to force a complete uninstall of Flash Player when using the standalone uninstaller. However, when using the FlashUtil.exe to uninstall, you are still required to use the -force argument to perform a complete uninstall.

Note: The arguments listed below only apply to the EXE installer, not the MSI installer.

The new command line arguments are:

-install: Perform a silent install of the Flash Player.

-uninstall: Perform a silent uninstall of the Flash Player.

Note: These arguments can be used with the standalone uninstaller, or with the FlashUtil .exe in \Macromed\Flash directory